Jove fully expected to be awake for the entire night, but as is often the case, he fell asleep anyway. The sleeping bag's warmth was as seductive as the forbidden allure of the situation within it, and his exhaustion made him an easy target.
He awoke some time later and found that he'd shifted onto his side during the night. It took him a moment to remember that the woman he was currently spooning with was his sister, but when he did, an avalanche of conflicted emotions enveloped him.
He knew he should pull away. His cock was just as hard as it had been earlier and now pressed firmly against her ass. Eve, presumably, was still asleep. He could spare them both the awkwardness of having to pretend not to acknowledge that they were pressed together like lovers, poised for a delicious round of early morning sex, had they been anyone else to one another.
He heard her make a noise and shift backwards. Her butt did a little rubbing motion against his cock and groin, stealing his breath away. What would it feel like to thrust against, to have it as the cushion his hips were crashing into on each pump?
The question was sickeningly erotic. He had to exhale and remind himself that it was Eve, his sister, who he loved dearly and unconditionally even when she was a total bitch.
She let out a moan - an actual moan, sexy and lilting - and rubbed her butt along his cock again. Jove had never been tested like this before. He wasn't about to start molesting his sister in her sleep, but he was almost too turned on to come up with reasons why he shouldn't.
His cock was nearly free of his boxers, routing its way through the fly like a commando slipping through a gap in a fence. He put an arm around Eve and hugged her gently, trying to distract himself from her… with her. It was a bold strategy with some obvious flaws.
"Mmm," moaned Eve sleepily. "Oh…"
She flexed her hips, almost pinning his member, though his boxers killed the angle. Jove couldn't take it anymore. The guilt was still there, distant but real. She was his sister, and she was sleeping, and he loved her too much to take advantage of the situation.
"Eve," he whispered, shaking her. "Hey. Wake up."
He prodded a finger against her nostril as though about to pick her nose for her. It was an old joke they'd had as kids, trying to wake each other up with a sneeze. Eve let out a rather hilarious snort and jerked awake.
"Jovian," she muttered. "Is that… oh my god. It is, isn't it?"
"It depends on what you mean by 'it'," he whispered.
"You have a massive erection," she whispered, in a voice that had a not displeased inflection to it. "Apparently Aunt Aster isn't the only one you're a total perv for."
"I am not a perv for Aster!" he snapped. "Or anyone, for that matter."
He felt his face heat up. What did she know? His mind jumped back to the sauna, the sex, how wild and impulsive and wrong it had been. He remembered how she'd denied the entire night the next morning, how much that'd deepened his shame. Was Eve right?
"Says the man with his morning wood still glued to my ass," said Eve.
"You want me to get out of the sleeping bag and die in the cold?" he asked. "Besides, I woke you up because you wouldn't stop grinding on me like a cat in heat."
"I was half asleep," said Eve, taking her turn on defense. "Trying to… get comfortable."
"By all means, but don't turn it around and act like it's my fault if…"
He trailed off, and that if hung in the air like a proclamation. Eve exhaled, breath catching a little as it came out. She surprised him with a small rocking movement from the hips, rubbing her butt against his cock as she had been before.
"So you and Aster haven't… you know?" She did it again and Jove's mind was suddenly a place of heat and bad decisions.
"Haven't what?" He rocked forward into her, keeping the movement small and subtle.
"You know."
"If you won't even say what you're implying," he began, letting his words come out hot against her neck, "then how can you expect an answer?"
"I've seen her body language toward you." Eve kept her rhythm up, as though it punctuated her point.
"You really want to talk about body language, Eve?" whispered Jove, lips almost grazing her neck.
"Maybe."
"Then what does this say?"
He slowly slid his hand along her body, tracing her pale, flawless skin, fingers teasing her taut stomach, until his palm came to a rest right on her bra-clad tit.
He already knew they were fairly nicely sized, not huge, but a solid handful. Even through her bra, he could feel their softness, how squeezable they were, how they'd jiggle in motion.
"That says my little brother is a perv after all." She sounded so smug even as she kept moving her hips like she was giving a lap dance at a truck stop strip club. "God, I bet you really would have kept going if I hadn't woken up. You would have seen how far you could go and then probably gone even further."
"You say it like that's what you wanted." Jove matched her movements, dry humping his frustration out against her ass.
"As if."
"You think I never noticed how you had a new guy as your ski buddy every weekend back when you were in high school?"
"None of them could keep up with me on the slopes or… elsewhere," she said. "But I didn't even do anything with most of them, for your information."
"Just a tease, then?"
"Well… that depends."
"Really?"
"Mmhmm."
He kissed her neck, unable to stop himself. He might as well have pressed the barrel of a cold gun on the spot he kissed instead, judging from her reaction. Any restraint Jove had earlier evaporated against the heat. He pulled her bra down and fondled one of her boobs.
Eve rocked against him, making noises now, tiny moans and odd, fluttering breaths almost like hiccups. Had she made these same noises for her ski buddies? Jove kissed her neck and tweaked one of her nipples. He reached down and slid his fingertips into her panties with one hand as he started to roll her onto her back with his other.
"No, no," said Eve, rubbing his side. "Let's just… stay like this."
"So you are just a…"
He trailed off as he felt Eve reach down and deftly free his cock from his boxers.
"Were you saying something, Jovian?" she asked, her voice wavering with forced control.
"Fuck…"
Her soft fingers and hand were bliss, exactly what the moment called for. Eve's hand, Eve's fingers. Was he dreaming? No, his dreams weren't usually that debased.
"I'll make sure you're taken care of, little brother," whispered Eve. "But only if you admit the truth about Aster."
"…Alright." He humped forward, thrusting against her hand as she stroked a little faster. "Only after we both finish."
"We? Who said anything about…?"
He slid his hand into her panties and discovered that she was soaking wet. He let his finger tease her clit, and his sister let out another of those odd, hiccup noises, too turned on to sound pretty.
She kept stroking his cock, still moving against him with little flexes and shifting motions. Jove felt his heart pounding out of his chest. All of the feelings and frustration he had for his sister seemed to exist on the tip of the moment, bundled together by the strength of his lust.
"Oh fuck," moaned Eve.
She pulled her hand away from his member, but replaced it with her thighs, squeezing his cock in between them. He felt the dampness running down from her panties onto his shaft, not that it was even necessary given how insanely good it felt to pump into her thigh gap at a base level.
"Damn, Eve," he whispered. "Your body is banging."
"You're… not bad either," she said. "Especially down here."
She reached down and let her fingers rub the head of his cock for the next few pumps through her thighs. He wanted to find out of her pussy was even tighter than what he was currently experiencing. He started to pull her panties aside but she grabbed his wrist and let out an odd laugh.
"Play by the rules, little brother," she whispered.
"I don't think you want me to."
"Oh God!" She tensed as he teased her clit again. Jove thrust faster into her thighs, suddenly locked in by the momentum of his hips.
They continued to touch and explore each other's bodies, the heat between them growing more intense. Jove's hand remained firmly on Eve's breast, kneading and squeezing gently as she ground her ass against him. Eve let out a soft moan, her body shivering with pleasure.
He couldn't believe what was happening. This was his sister, the same person he had grown up with bickering over the breakfast table and playing Pokémon on the couch. But in that moment, she was someone else entirely. She was a woman - beautiful, desirable, and irresistible.
He could feel her getting closer, her muscles tensing and releasing in a rhythm that mirrored his own. He wanted to make her come, to feel her shatter beneath his touch.
He increased the pressure on her clit, his fingers moving in quick, circular motions. Eve's moans grew louder, her body bucking against his. He could feel her getting wetter, her juices coating his fingers as he continued to tease and tantalize.
Suddenly, she tensed, her body going rigid as a wave of pleasure crashed over her. She cried out, her nails digging into his leg as she rode out the orgasm. Jove slid a finger inside her and felt her muscles contracting around his fingers, body shuddering with each wave of pleasure.
Jove's hips moved with a mind of their own, his cock sliding between Eve's slick thighs. He could feel the heat radiating from her, the wetness seeping through her panties and coating his length. His fingers were still buried in her softness, her wetness, her heat. He wanted more. He wanted to feel her tightness around him, to plunge deep inside her and claim her as his own. To cross the line.
His body didn't seem to care about lines or morality. It only cared about release. And as Eve continued to rock against him, her breath hot against his neck, her fingers digging into his skin, he felt himself losing control.
He tried to pull away, to regain some semblance of balance, but Eve's grip on him was strong. She held him tight, her thighs clenched around his cock, her body moving in perfect rhythm with his.
"Eve," he gasped, his voice barely a whisper. "Fuck!"
But it was too late. With a final, desperate thrust, he came. His release was intense, his body shuddering as he spilled himself between her thighs and all over the sleeping bag. He could feel the warmth spreading, the wetness coating his cock and her skin.
Eve let out a soft moan, her body stilling as she felt him come. She didn't pull away or try to push him back. Instead, she rolled over to cuddle against him, her arms wrapping around him as they both tried to catch their breath.